Cannot browse App documents after upgrading to iOS 8.3

I just upgraded my iPhone 5s to iOS 8.3. I found that I am unable to access the contents of Apps using software like iTools, iFunbox and PhoneView.

Does iOS 8.3 change security settings in App document folders?

Tried software:

1. iFunbox
2. iTools (latest version & version 2013)
3. PhoneView (demo version)
4. iMazing (trial version)
5. iExplorer (trial version)

UPDATE Here is the security content change log of iOS 8.3 regarding the document access (CVE-2015-1087):

Backup

Available for: iPhone 4s and later, iPod touch (5th generation)
and later, iPad 2 and later Impact: An attacker may be able to use the
backup system to access restricted areas of the file system
Description: An issue existed in the relative path evaluation logic of
the backup system. This issues was addressed through improved path
evaluation.

CVE-ID

CVE-2015-1087 : TaiG Jailbreak Team